火山是由火山岩浆构成的。自己制作火山岩浆,看看它是怎么往外冒的。你需要:馅饼盘,报纸,小玻璃瓶,量勺,小苏打,红色食物色素,白醋。第一步:把馅饼盘放在报纸上。把小玻璃瓶放在盘子上,在里面加入15毫升小苏打。第二步:加入5滴红色食物色素。第三步:加入60毫升白醋。现在来观察火山岩浆咕嘟咕嘟地往上冒吧! Volcano is composed of volcanic magma. Make volcanic lava yourself and see how it comes out. You need: pie tray, newspaper, small glass bottle, measuring spoon, baking soda, red food coloring, white vinegar. The first step: the pie tray on the newspaper. Put the glass bottle on the plate, add 15 ml baking soda inside. The second step: add 5 drops of red food pigment. The third step: add 60 ml of white vinegar. Now to observe the volcanic magma gurgle up to take it!